I wasn't previously aware of it, but it seems to have been part of a series of 'Falcon' movies, starring Tom Conway (brother of George Sanders) as the Falcon, a private detective who gets into hot water, usually involving a girl in peril who he has to save from some baddies. This particular episode was also directed by Joseph H. Lewis, of 'Gun Crazy' and 'The Big Combo' fame.
I was attracted to this one because it was set in my beloved San Francisco, but also because the hair and costumes were great. The villain of the piece - Doreen Temple as played by Fay Helm (thank you, IMDB!) - had some fabulous outfits:
With part of the neckline of this one:
I'd come up with something similar.
And here it is!
The neckline isn't exactly the same, but it's a pretty good attempt; if I made it again, I'd bring it closer together at the front and tighter around the neck. The fabric is a lightweight rayon with a soft feel and drape, like a washed silk.
I added the black cord around the neck to give more emphasis to the shape and add a touch of 1940's detailing:
|'Bonnie' shoes by Miss L Fire|